US 12,228,031 B2
Deep learning holdup solution from neutron capture and inelastic scattering
Mayir Mamtimin, Spring, TX (US); and Jeffrey James Crawford, Katy, TX (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Aug. 25, 2021, as Appl. No. 17/412,078.
Prior Publication US 2023/0060188 A1, Mar. 2, 2023
Int. Cl. G01V 5/10 (2006.01); E21B 47/00 (2012.01); E21B 49/00 (2006.01); G06N 3/045 (2023.01)
CPC E21B 49/00 (2013.01) [E21B 47/00 (2013.01); G01V 5/102 (2013.01); G06N 3/045 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A method for determining a borehole holdup, the method comprising:
logging a well with a pulsed-neutron logging (PNL) tool;
receiving, via the PNL tool, transient decay measurements, capture spectrum measurements, and inelastic spectrum measurements;
extracting information from each of the capture spectrum measurements, the inelastic spectrum measurements, and the transient decay measurements;
combining at least some of the extracted information to form an input;
inputting the input into a model; and
determining the borehole holdup with the model.